:root {
    --azul-logo:     #3B9ECC;
    --azul-logo-h:   #2D85B0;
    --azul-escuro:   #0F1E2B;
    --azul-suave:    #EAF4FA;
    --cinza-texto:   #374151;
    --cinza-claro:   #6B7280;
    --cinza-borda:   #D1D5DB;
    --cinza-fundo:   #F6F8FB;
    --erro:          #B91C1C;
    --erro-bg:       #FEF2F2;
    --sucesso:       #047857;
    --sucesso-bg:    #ECFDF5;
    --aviso-bg:      #FFFBEB;
    --aviso-border:  #F59E0B;
    --branco:        #FFFFFF;
    --radius:        10px;
    --shadow-sm:     0 1px 2px rgba(15,30,43,.05);
    --shadow-md:     0 4px 12px rgba(15,30,43,.08);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Arial, sans-serif;
    background: var(--cinza-fundo);
    color: var(--cinza-texto);
    line-height: 1.55;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 820px;
    margin: 0 auto;
    padding: 2.5rem 1.25rem 4rem;
}

/* ============= HEADER ============= */
header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 3px solid var(--azul-logo);
}

.logo {
    max-width: 280px;
    height: auto;
    margin: 0 auto 1rem;
    display: block;
}

header h1 {
    color: var(--azul-escuro);
    margin: 0 0 .35rem;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -.01em;
}

.subtitulo {
    color: var(--cinza-claro);
    margin: 0;
    font-size: .95rem;
    font-weight: 500;
}

.razao-social {
    color: var(--cinza-claro);
    margin-top: .25rem;
    font-size: .82rem;
    font-style: italic;
}

/* ============= SECOES ============= */
section {
    background: var(--branco);
    padding: 1.75rem 1.85rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid #EEF2F6;
}

.aviso {
    border-left: 4px solid var(--azul-logo);
}

.aviso h2 {
    margin: 0 0 .9rem;
    font-size: 1.1rem;
    color: var(--azul-escuro);
    font-weight: 700;
}

.aviso ul {
    margin: 0;
    padding-left: 1.2rem;
}

.aviso li {
    margin-bottom: .55rem;
    color: var(--cinza-texto);
}

.aviso li:last-child { margin-bottom: 0; }

.aviso strong {
    color: var(--azul-escuro);
}

/* ============= ERRO ============= */
.erro {
    background: var(--erro-bg);
    color: var(--erro);
    padding: 1rem 1.15rem;
    border-radius: var(--radius);
    border-left: 4px solid var(--erro);
    margin-bottom: 1.5rem;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

.erro::before {
    content: "!";
    display: inline-block;
    width: 1.2rem;
    height: 1.2rem;
    line-height: 1.2rem;
    text-align: center;
    background: var(--erro);
    color: var(--branco);
    border-radius: 50%;
    margin-right: .5rem;
    font-weight: 700;
    font-size: .85rem;
}

/* ============= FORM ============= */
form {
    background: var(--branco);
    padding: 2.25rem 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    border: 1px solid #EEF2F6;
}

.campo {
    margin-bottom: 1.35rem;
}

.campo label {
    display: block;
    font-weight: 600;
    margin-bottom: .45rem;
    color: var(--azul-escuro);
    font-size: .92rem;
}

.obrig {
    color: var(--erro);
    margin-left: .1rem;
}

.campo input[type="text"],
.campo input[type="email"],
.campo select,
.campo textarea {
    width: 100%;
    padding: .75rem .9rem;
    border: 1.5px solid var(--cinza-borda);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background: var(--branco);
    color: var(--azul-escuro);
    transition: border-color .15s, box-shadow .15s;
}

.campo input[type="text"]::placeholder,
.campo input[type="email"]::placeholder,
.campo textarea::placeholder {
    color: #A0AEC0;
}

.campo input[type="file"] {
    width: 100%;
    padding: .55rem 0;
    font-family: inherit;
    color: var(--cinza-texto);
}

.campo input:focus,
.campo select:focus,
.campo textarea:focus {
    outline: none;
    border-color: var(--azul-logo);
    box-shadow: 0 0 0 3px rgba(59,158,204,.15);
}

.campo textarea {
    resize: vertical;
    min-height: 90px;
    line-height: 1.55;
}

.campo small {
    display: block;
    color: var(--cinza-claro);
    font-size: .84rem;
    margin-top: .35rem;
}

.campo-honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* ============= BOTAO ============= */
.acoes {
    margin-top: 2.25rem;
    text-align: center;
}

button[type="submit"] {
    background: var(--azul-logo);
    color: var(--branco);
    border: 0;
    padding: .95rem 3rem;
    border-radius: 8px;
    font-size: 1.02rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s, transform .05s, box-shadow .15s;
    font-family: inherit;
    box-shadow: 0 2px 6px rgba(59,158,204,.25);
    letter-spacing: .01em;
}

button[type="submit"]:hover {
    background: var(--azul-logo-h);
    box-shadow: 0 4px 12px rgba(59,158,204,.35);
}

button[type="submit"]:active {
    transform: translateY(1px);
}

.rodape-form {
    text-align: center;
    color: var(--cinza-claro);
    font-size: .82rem;
    margin: 1.25rem 0 0;
    padding-top: 1rem;
    border-top: 1px solid #EEF2F6;
}

/* ============= SUCESSO ============= */
.sucesso {
    border-left: 4px solid var(--sucesso);
}

.sucesso h2 {
    margin: 0 0 1rem;
    color: var(--sucesso);
    font-size: 1.25rem;
    font-weight: 700;
}

.sucesso h3 {
    color: var(--azul-escuro);
    font-size: 1.05rem;
    margin: 1.5rem 0 .75rem;
}

.sucesso .protocolo {
    background: var(--sucesso-bg);
    border: 2px dashed var(--sucesso);
    padding: 1.25rem;
    text-align: center;
    border-radius: var(--radius);
    font-size: 1.5rem;
    letter-spacing: 3px;
    margin: 1.25rem 0;
    font-family: "SF Mono", "Cascadia Code", "Consolas", monospace;
    color: var(--sucesso);
    font-weight: 700;
}

.aviso-sair {
    background: var(--aviso-bg);
    padding: 1rem 1.15rem;
    border-radius: var(--radius);
    border-left: 4px solid var(--aviso-border);
    margin-top: 1.75rem;
    font-size: .92rem;
    color: #7C2D12;
}

/* ============= FOOTER ============= */
footer {
    text-align: center;
    margin-top: 2.5rem;
    color: var(--cinza-claro);
    font-size: .82rem;
}

footer p {
    margin: .3rem 0;
}

footer a {
    color: var(--azul-logo);
    text-decoration: none;
    font-weight: 500;
}

footer a:hover {
    color: var(--azul-logo-h);
    text-decoration: underline;
}

/* ============= RESPONSIVO ============= */
@media (max-width: 640px) {
    .container { padding: 1.5rem .85rem 3rem; }
    header { margin-bottom: 1.5rem; padding-bottom: 1.5rem; }
    header h1 { font-size: 1.4rem; }
    .logo { max-width: 220px; }
    form { padding: 1.5rem 1.15rem; }
    section { padding: 1.25rem 1rem; }
    .sucesso .protocolo { font-size: 1.2rem; letter-spacing: 2px; }
}